Die-casting apparatus



J. KRALUND.

DIE CASTING APPARATUS.

APPLICATION FILED MAY 8,1920.

1A1 6,476 I Patented May16,1922.

um/MM molten metal to a die.

JQHN KRALUNT). CF EROOKLYN. NZEYVV YGRK. ASSIGN'OR T DOEHLER DIE CASTING COMPANY. OF BROOKLYN, NEW YORK. A CORPORATION OF NEW YORK.

DIE-CASTING APPARATUS.

' York. haveinvented certain new and useful Improvements in Die-Casting Apparatus. of which the followin is a specification.

My invention reIates to improvements in a die casting machine of the character in which a' carrier or ladle device transfers Such anapparatus is shown. for. example. in my Patent No. 1.299.738. dated April 8. 1919. In mechanism of this character the nozzle of the carrier is inserted into an openingin a plate,

opening into the die, after which the carrier and plate are separated, as by a movement of-the carrier away from the plate. back'into the melting pot to take another charge.

In the operation of such machines. sprues or gates often become stuck within the gate opening extending through the plate referred to. 'hen this happens operation of the machine must bestopped until the gate opening referred to has been cleaned out and the. consequent-loss of time is aptto reduce toa considerable extent the effectiveness of the machine. f

By my present invention I provide a simple andeffective mechanism for knocking out the sprites from the gate opening when thesame become stuck therein. with a minimum loss of time. I; attain-this result by mounting an arm or lever on the plate through which the gate opening extends. this arm carrying a pin" which is so positioned as to enter.the gate opening and knock against the end of the spnue therein when .the arm is oscillated. The arm may effectively be mounted on a shaft which is mounted on top of the plate. the shaft being oscillated.-when necessary. by manual means such as a handle on the end of the'shaft.

. forceto dislodgea sprue' from the gate open ing. whenever required.

In order that my invention maybe more Application filed- May a.

Specification of Letters Patent. Patntgdl Ella-y 1%, 1922.

1920. Serial No. 379,712.

clearly understood. attention" is hereby are eaenr state.

directed to the accompanying drawings forming part of this application and embodying one form of my invention. Inthe drawings Fig. 1 represents a view partly in side'elevation and partly in section, of a melting pot. the end, plate of the die carrying frame. and the devicefor knocking'out.

sprues mounted thereon, and Fig. 2 is a front elevation of the end plate with the knock-out device mounted thereon. a

' Referring to the drawings the melting pot 1 of the apparatus is adapted to contain molten metal which isheated by suitable heating means within the chamber 2.. The

end plate 3 constitutes part ofthe die-carry. ing frame which may be provlded with rods indicated at l to which the end plate 3 is secured. The die-carrying frame is posi tioned. or may be positioned. in close prox imity to the melting pot l sothat the horizontal opemng or gate 5. extendmgthrough plate 3 will be closely adjacent to" the upper edge of the melting pot. A removable bushingj6 is preferably fitted within the open in 5 t 7 Q In the operation of the casting machine the forward half or portion of thedie' is mounted against the rear surface of end plate 3 sothat the opening 5 will communicate with the interior of the die. A movable carrier or ladle may be mounted within the melting pot-1 and operatedQas for example. by mechafiism such as that described in my patent referred to, so that'the carrier will take a charge of molten metal. and thenhave its nozzle inserted into the forwardend of the bushing 6., after which the charge of molten metal is forced through bushing 6 into the die and theladle then returned to position to take another charge. anism referred to is not part of my present invent-ion andis therefore not illustrated herein. The above brief description will,

however. serve to indicate themechanism with Wlll'Ch my present m1p1'ovement".1s adapted to coact. f I

In the embodiment of my invention illus-i trated theshaft- 7 is mounted horizontally in bearings 8-on the top surface" of plate 3 and is provided with the hand crank 9. Arm 10 is secured on shaft 7 to oscillate (pin 11 which is adapted to enter the forwar end of bushing 6 when The meching 5.

to knock against when said lever arm 10 is in its lowermost position to contact enters said opening, said lever bein aga nst a sprue winch may ing in arm'10 above bushin 6 so as to form an adjustable stop which wi 1 contact a mass have become mally positioned with the; pin remove from stuck within bushing 6. Preferably a bolt said opening, and a 12 is mounted Within a screwsthreaded openoscillating said lever. I p p 2, In casting apparatus, the combination gainst .of a die-carrying frame having an end plate 35 handle for manually the front surface of plate 3 to limit the With an opening therethrough, adapted to.

amount of movement of pin 11 into the openv serve as a During the normal operation fof the caste ing machine, the 'arm 10 may be,raised out of the path of the movable carrier device as V the same moves between the melting potand gate for the die, a shaft on said plate, a handle for oscillating said shaft, an arm secured to said shaft, and a'pinson said arm, said positioned to knock against a sprue in 40 opening, when said handle is operated.\ 3. In casting apparatus, the combination the bushing 6. When, however, a'sprue be of a die-carrying frame having an end plate comes stuclnin the bushing 6 the hand lever with an opening therethrough, adapted to 9 is operated to oscillate shaft 7 so as to serve as a gate for, the die, cause the pin 11- to strike a sharp blow t against the sprueri'n the opening so as to "tioned to knock against a sprue in said opening, when said lever is oscillated, andanadjustable stop pin mounted in said lever, to

abut against the face of said plate when said 50 pin enters said opening. 7 L I V J dislodge the tsame. n

What ll claim is: t 1. In casting apparatus, the combination of a die carrying frame having an end plate Wltll an opening therethrough adapted to l a lever pivoted 45 0 said plate, having a pin thereon posi This specification signed and witnessed serve as a gate for .the die, a lever pivoted this 4th day of May, 1920. 1 1

to said plate having a pin thereon'positionedm a a sprue in said opening is oscillated, ,an' adjustable stop pin mounted on said lever to abut against the face Witnesses:

of said plate when said pin enn KRALUND.

WILLIAM ,R. AHRBnRc, V WILLIAM E. BAUEnsoHMIDT. 

